package com.zp.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.zp.reggie.common.R;
import com.zp.reggie.entity.Employee;
import com.zp.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

//    员工登录
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
      /*
      ①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串

②. 根据页面提交的用户名username查询数据库中员工数据信息

③. 如果没有查询到, 则返回登录失败结果

④. 密码比对，如果不一致, 则返回登录失败结果

⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果

⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
       */
     // ①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        String password = employee.getPassword();
       password =  DigestUtils.md5DigestAsHex(password.getBytes());

     //②. 根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);
// ③. 如果没有查询到, 则返回登录失败结果

        if (emp ==null) {
            return R.error("登录失败");
        }
        //④. 密码比对，如果不一致, 则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return  R.error("登录失败");
        }
        //⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return  R.error("账户已被禁用");
        }
       // ⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }


    //员工退出登录
    @PostMapping("/logout")
    public  R<String> logout(HttpServletRequest request){
        //清理session中保存的当前登录员工ID
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }


    /*
新增员工
     */
    @PostMapping
    public  R<String> save(HttpServletRequest request, @RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        // 设置初始密码 123456  需要进行MD5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));


//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户id
//    Long empID=   (Long) request.getSession().getAttribute("employee");
//        employee.setCreateUser(empID);
//        employee.setUpdateUser(empID);
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     *员工信息分页查询
     */

    @GetMapping("/page")
    public R<Page>  page(int page ,int pageSize,String name){
        log.info("page={},pageSize={},name={}",page,pageSize,name);

        //构造分页构造器
Page pageInfo = new Page(page,pageSize);
        //构造条件构造器
LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();

//添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return R.success(pageInfo);
    }


    /**
     * 根据ID修改员工信息
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
//        Long employee1 = (Long) request.getSession().getAttribute("employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(employee1);
        long id = Thread.currentThread().getId();
        log.info("线程id为：{}",id);
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }


    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable  Long id){
        //PathVariable 路径变量

        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
       return R.error("没有查询到对应员工信息");
    }
}
